[State of RL/Reasoning] IMO/IOI Gold, OpenAI o3/GPT-5, and Cursor Composer — Ashvin Nair, Cursor

December 30, 2025

AI Summary

5 min read

The Format: This casual conference-side interview at NeurIPS dives into AI research evolution, blending personal career anecdotes with technical breakdowns of robotics, language models, and RL breakthroughs. Technical yet conversational, it feels like an insider chat unpacking hype versus reality in AI labs.
The Key Players:
- Guest: Astrain (Cursor AI researcher): Ex-OpenAI engineer with Berkeley PhD in RL-focused robotics; previously interned at OpenAI in 2017; known for hands-on work in code gen, reasoning models like o1/o3, and now pioneering agentic coding tools at Cursor—fascinating for bridging gritty robotics data-grinding to frontier LLM scaling.

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1 (00:00) **🎙️ Introduction: Astrid from Cursor**
2 (00:25) **Switching from Robotics to Language Models**
3 (03:15) **OpenAI Restarting Robotics Team & Market Hype**
4 (06:00) **Joining OpenAI & Early Code Gen Work**
5 (09:00) **RL Research Pitfalls & Academia Incentives**
6 (11:30) **Scaling Era & RL on LMs**
7 (16:00) **End of "One Model Fits All"?**

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sdw